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Re: [CQ-Contest] Handicap For Dirty Rigs

To: "cq-contest@contesting.com" <cq-contest@contesting.com>
Subject: Re: [CQ-Contest] Handicap For Dirty Rigs
From: RT Clay <rt_clay@bellsouth.net>
Reply-to: RT Clay <rt_clay@bellsouth.net>
Date: Tue, 21 Oct 2014 07:47:58 -0700
List-post: <cq-contest@contesting.com">mailto:cq-contest@contesting.com>
I disagree- signal analysis is certainly possible and won't take that much 
computer power. It is mostly an issue of coming up with a good algorithm. CW 
Skimmer for example can remove key clicks from signals- it should be easy to 
spit out a measure of how much click was removed from each signal. Then such 
signals could be flagged for later checking on a I/Q recording and the worst 
offenders checked.


"Supercomputers" these days use the same CPU chips (Intel/AMD) that anyone else 
can buy. You can get quite a lot of computer power for less than the cost of a 
new Elecraft/Icom/Yaesu HF rig.

Tor
N4OGW



On Tuesday, October 21, 2014 9:25 AM, Robert Chudek - K0RC <k0rc@citlink.net> 
wrote:
 

>
>
>Yes, the SSB skimmer and QoS goals may sound almost impossible to 
>achieve right now, but I recall when President Kennedy said... /"I 
>believe this nation should commit itself to achieving the goal, before 
>this decade is out, of landing a man on the moon//and returning him 
>safely to earth."/  In that context, you and I should see technology 
>triumph over these next challenges too!
>
>73 de Bob - KØRC in MN
>
>------------------------------------------------------------------------
>On 10/21/2014 6:29 AM, Pete Smith N4ZR wrote:
>> You got that right, Bob.  The RTTY Skimmer case is simple by 
>> comparison.  An individual RBN Skimmer may handle 50-60,000 spots 
>> during a CQWW weekend.  now imagine how much overhead would be 
>> required for each of them to process each one of those signals across 
>> a 5-10 KHz bandwidth to determine whether it is too broad, rather than 
>> sticking to a single 50-Hz decoding channel.  I'd put this one in the 
>> same unattainable class as the SSB Skimmer, at least until we all have 
>> supercomputers in the shack.
>>
>> 73, Pete N4ZR
>> Check out the Reverse Beacon Network at
>> http://reversebeacon.net,
>> blog at reversebeacon.blogspot.com.
>> For spots, please go to your favorite
>> ARC V6 or VE7CC DX cluster node.
>>
>> On 10/20/2014 6:59 PM, Robert Chudek - K0RC wrote:
>>>
>>> ...Inserting a QoS value into the RBN distribution is most likely 
>>> easier than developing a QoS detection system. That said, I recall 
>>> when the CW skimmer and RBN were being developed, thinking to myself 
>>> "Geez, it would really be great if the someone would create an RTTY 
>>> skimmer too." The RTTY system is here now.
>>>
>>> 73 de Bob - KØRC in MN
>>
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>
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